HOMER Pro 3.16

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Navigation: Glossary

Generator Average Total Efficiency

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Type:	Output Variable
Units:	%
Symbol:	ηgen,tot

The generator average total efficiency is the average of the generator's total efficiency over a year, defined as the electrical plus thermal energy out divided by fuel energy in. HOMER uses the following equation to calculate the average total efficiency:

equations_eta_gen,tot-average

where:
	Egen	= the generator's total annual electrical production [kWh/yr]
	Hgen	= the generator's total annual thermal production [kWh/yr]
	mfuel	= the generator's total annual fuel consumption [kg/yr]
	LHVfuel	= the lower heating value of the fuel [MJ/kg]

We use 3.6 in the equation above because 1 kWh = 3.6 MJ.